movc3 is NOT always faster!
Tim Bray
tbray at mprvaxa.UUCP
Wed Mar 14 03:04:30 AEST 1984
x <-- USENET insecticide
When you gaily issue a movc3, there's a LOT of microcode that
starts swishing around, and also if you're assembler hacking,
you might have to push all the registers that movc* steps on.
An internal DEC benchmark I saw once suggested that movc3 becomes
a win at about 100 bytes - fewer bytes than that and a tight
mov, aobleq loop is better.
Tim Bray ...decvax!microsoft!ubc-vision!mprvaxa!tbray
...ihnp4!alberta!ubc-vision!mprvaxa!tbray
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